Linolenic acid (C₁₈H₃₀O₂) can be hydrogenated to stearic acid by reacting it with hydrogen gas according to the equation: C₁₈H₃₀O₂ + 3H₂ → C₁₈H₃₆O₂
What volume of hydrogen gas, measured at STP, is required to react with 10.5 g of linolenic acid in this reaction?

Question

Quizplus · Accepted Answer

The molar mass of linolenic acid is 278.46 g/mol. Therefore, 10.5 g of linolenic acid is 0.0377 mol. The reaction requires 3 moles of H2 per mole of linolenic acid, so 0.1131 mol of H2 is needed. At STP, 1 mole of gas occupies 22.4 L, so 0.1131 mol of H2 occupies 2.53 L.

Linolenic Acid (C18H30O2) Can Be Hydrogenated to Stearic Acid by Reacting

Linolenic Acid (C₁₈H₃₀O₂) Can Be Hydrogenated to Stearic Acid by Reacting